History of Neocaridina

Scientific introduction

Isamu Kubo established the genus Neocaridina in 1938, separating an East Asian atyid line from taxa then assigned to other genera. The earlier davidi species authority is Bouvier (1904); synonyms and trade usages including heteropoda have changed. Neocaridina denticulata is a separate scientific name, not a universal label for pet cherry shrimp.

• Taxonomic genus authority Neocaridina 1938
• Neocaridina nominal species and scientific nomenclature
• University of Florida summary of Neocaridina davidi trade morphs and nomenclature

Evolution and distribution

Several nominal species inhabit East Asian freshwater systems. Molecular studies have challenged deep Atyidae taxonomic boundaries; one mitochondrial marker tree cannot be read as a domestic color-breeding map.

• Broad Atyidae phylogeny shows taxonomic uncertainties

The ornamental boom

Selective breeding of Neocaridina davidi established Cherry and red grades, followed by market-recognized orange, yellow, green, blue, dark and Rili variations. The University of Florida lists these trade families, but scientific articles do not establish a single founding pedigree or a one-gene mechanism for each named color.

• University of Florida summary of Neocaridina davidi trade morphs and nomenclature
• Peer-reviewed study of red, brown and white Neocaridina davidi morphs; does not map commercial pedigree
• Specialist keeper report of Blue Jelly, Red Rili and line-cross observations; not molecular proof

Research questions

How reproducibly do phenotypes segregate across unrelated colonies? Which chromatophore pathways contribute to variation? Do tissue color and shell color respond independently to selective breeding? Are Blue Jelly and Blue Dream ancestry claims consistent within each supplier family?